scholarly journals Survey and mapping of heavy metals in groundwater resources around the region of the Anzali International Wetland; a dataset

Data in Brief ◽  
2018 ◽  
Vol 18 ◽  
pp. 463-469 ◽  
Author(s):  
Masoud Vatandoost ◽  
Dariush Naghipour ◽  
Saeed Omidi ◽  
Seyed Davoud Ashrafi
Keyword(s):  
Heavy Metals ◽  
Groundwater Resources ◽  
Anzali International Wetland

Applications of Nanoparticles in Heavy Metal Removal for Wastewater Treatment at Brahmani River

2020 ◽  
Vol 17 (9) ◽  
pp. 4666-4670
Author(s):  
Himanshu Sekhar Rath ◽  
Mira Das ◽  
Smita Rath ◽  
U. N. Dash ◽  
Alakananda Tripathy
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Removal ◽  
Activated Carbons ◽  
Low Cost ◽  
Groundwater Resources ◽  
Heavy Metal Removal ◽  
Absorption Capacity ◽  
Current Standard ◽  
River Stretch

The goal of this research is to determine the current standard of water quality along the Brahmani River stretch in terms of physico-chemical parameters. The River Brahmani receives a substantial amount of industrial waste in the identified study area and is witness to a large amount of human and agricultural activities. Nowadays Ninety percent of Brahmani’s required water is secured with groundwater resources and it is essential to forecast pollutant content in those resources. Hence, this research aimed at using of nanoparticles such as Activated Carbons (ACs) for removal of heavy metal such as nickel and zinc in Brahmani river using the Langmuir approach. Adsorption seems to be the most widely used method for heavy metal recovery due to its low cost, easy installation and the presence of alternative adsorbents. In addition, the process of adsorption can also be made in use to recover heavy metal ions from wastewater. Despite these advantages, adsorption is hard to commercialize. Due to the strong absorption capacity, high number of pores and wide, common area, nanoparticles are treated as the effective method in removal of heavy metals in rivers. Comparative analysis shows that seventy-one percent of heavy metals can be removed using the nanotechnology model.

scholarly journals Assessment of Heavy Metals in Deep Groundwater Resources of the Kathmandu Valley, Nepal

2016 ◽  
Vol 07 (04) ◽  
pp. 516-531 ◽  
Author(s):  
Suman Man Shrestha ◽  
Kedar Rijal ◽  
Megh Raj Pokhrel
Keyword(s):  
Heavy Metals ◽  
Groundwater Resources ◽  
Kathmandu Valley ◽  
Deep Groundwater

scholarly journals GIS-based assessment of groundwater quality and suitability for drinking and irrigation purposes in the outlet and central parts of Wadi El-Assiuti, Assiut Governorate, Egypt

2020 ◽  
Vol 44 (1) ◽  
Author(s):  
Hanaa A. Megahed
Keyword(s):  
Heavy Metals ◽  
Trace Elements ◽  
Major Ions ◽  
Anthropogenic Activities ◽  
Groundwater Resources ◽  
Integrated Approach ◽  
World Health ◽  
Arid Environments ◽  
Drinking And Irrigation ◽  
Groundwater Samples

Abstract Background The limited water resources in arid environments in addition to the effect of agricultural and anthropogenic activities on groundwater quantity and quality necessitate paying more attention to the quality assessment of these resources. The present studies assess the quality of groundwater resources in Wadi El-Assiuti, south Egypt, and evaluate their suitability for drinking and irrigation purposes. To achieve this goal, 159 groundwater samples were collected from the outlet and central parts of the Wadi El-Assiuti during the autumn season (October–November) of 2019 and were analyzed for major ions, trace elements and heavy metals. Results The results indicate that the TDS values range between 1972 and 6217 ppm, while the concentration of trace elements (Fe++, Mn++ and Ni+) ranges between 0.05 and 0.46, 0.11 and 0.221 and 0.01 and 0.6 ppm, respectively. These results show that all groundwater samples are clearly unacceptable and inappropriate for human drinking due to their high content of total dissolved solids, trace elements and heavy metals, particularly in the majority of samples according to World Health Organization (WHO) guidelines and the Egyptian standards (Eg. St. 2007) for drinking water quality. Spatial analysis of the TDS values in geographic information system environment indicates that the salinity is higher in the northeast and gradually decreases southward. Sodium adsorption ratio, US Salinity Laboratory classification (1954), residual sodium carbonate, soluble sodium percentage and permeability index show that most groundwater samples are suitable for irrigation purposes. Conclusions The integrated approach provided in this study highlights the spatially distributed suitability of groundwater resources in Wadi El-Assiuti and can be applied in similar basins worldwide.

scholarly journals A Comparison of Performance of Artificial Neural Networks for Prediction of Heavy Metals Concentration in Groundwater Resources of Toyserkan Plain

2017 ◽  
Vol 4 (1) ◽  
pp. 11792-11792 ◽  
Author(s):  
Meysam Alizamir ◽  
Soheil Sobhanardakani
Keyword(s):  
Heavy Metals ◽  
Neural Networks ◽  
Artificial Neural Networks ◽  
Mean Squared Error ◽  
Groundwater Resources ◽  
Coefficient Of Determination ◽  
Multi Layer Perceptron ◽  
Squared Error ◽  
Artificial Neural ◽  
Statistical Indicators

Nowadays, about 50% the world’s population is living in dry and semi dry regions and has utilized groundwater as a source of drinking water. Therefore, forecasting of pollutant content in these regions is vital. This study was conducted to compare the performance of artificial neural networks (ANNs) for prediction of As, Zn, and Pb content in groundwater resources of Toyserkan Plain. In this study, two types of artificial neural networks (ANNs), namely multi-layer perceptron (MLP) and Radial Basis Function (RBF) approaches, were examined using the observations of As, Zn, and Pb concentrations in groundwater resources of Toyserkan plain, Western Iran. Two statistical indicators, the coefficient of determination (R2) and root mean squared error (RMSE) were employed to evaluate the performances of various models. The results indicated that the best performance could be obtained by MLP, in terms of different statistical indicators during training and validation periods.

scholarly journals Quantity and quality of groundwater resources distribution along Sirdarya province, Uzbekistan

2021 ◽  
Vol 284 ◽  
pp. 01015
Author(s):  
Rashid Kulmatov ◽  
Sarvar Odilov ◽  
Sayidjakhon Khasanov ◽  
Rustam Allaberdiev
Keyword(s):  
Heavy Metals ◽  
Groundwater Resources ◽  
Sustainable Use ◽  
Climatic Conditions ◽  
Space Distribution ◽  
Allowable Limit ◽  
Resources Distribution ◽  
Current Context ◽  
Practical Recommendations

In the current context of climate change, water resources are an important source of the economy of Uzbekistan. The article assesses the climatic conditions of Sirdarya province for 2006-2018, groundwater resources for 2010-2018, their efficient use, the chemical composition of groundwater (chlorine and sulfate from anions, Cu, Be, Mo, As, Pb, Se from harmful heavy metals and Sr). Analysis of the time and space distribution of the amount of heavy metals in the groundwater of the province showed that their amount did not exceed the allowable limit. Changes in the amount of groundwater used for drinking, irrigation, industrial and technical purposes in the province were identified and evaluated, as well as scientific and practical recommendations for sustainable use and protection of groundwater resources.

scholarly journals Physico- Chemical and Microbial Properties of Surface and Groundwater Resources: Case Study of Kogi State, Central Nigeria

2018 ◽  
Author(s):  
Seyi Mepaiyeda ◽  
Kakaba Madi
Keyword(s):  
Heavy Metals ◽  
Trace Elements ◽  
Water Resources ◽  
Water Samples ◽  
Stream Water ◽  
Groundwater Resources ◽  
Most Probable Number ◽  
Indicator Organisms ◽  
Probable Number ◽  
Hand Pump

Analysis of water resources of this area was carried out in order to assessing the water quality by determining the concentrations of Cations, Anions, Heavy metals, Trace elements, PH, Alkalinity, Total Dissolved Solids and microbial loads in water samples. Ten (10) water samples were collected from the study area - samples each of rain water, two pond waters - 1 and 2, stream water, four (4) hand-dug wells, hand pump water and a motorized borehole. The results obtained were compared with WHO standards and it showed that all the cations in water samples are within the limits. The water samples at locations B, E, F, G, H, I, and J have high alkalinity and HC0-3 content. The heavy metals (Pb, Ni and Cd) and trace elements (Fe and Cu) are dominantly high in the surface waters. Microbiological substances in the water samples from the study area revealed indicator organisms higher than the WHO standard for drinking water. Samples obtained from location G, I and J recorded an absence of E. coli and are fit for human consumptions but needed to be treated due to high MPN (Most Probable Number) index of viable microorganisms as against WHO standard. This research showed that the water resources of the study area are gradually polluted and in the near future may not be good for drinking.

Electrokinetic Remediation of Contaminated Soils With Chromium

2018 ◽  
Author(s):  
A. Ribeiro ◽  
C. Vilarinho ◽  
J. Araújo ◽  
J. Carvalho
Keyword(s):  
Heavy Metals ◽  
Contaminated Soil ◽  
Contaminated Soils ◽  
Removal Rate ◽  
Groundwater Resources ◽  
Electrokinetic Remediation ◽  
Permeable Reactive Barrier ◽  
Complexing Agent ◽  
Low Permeability ◽  
Reactive Barrier

Soil is a vital natural resource that regulates our environment sustainability and provide essential resources to humans and nature. Nowadays, with an increasingly populated and urbanized world, pollution is widely recognized as a significant challenge to soil and groundwater resources management. The most common chemicals found in soils and water plumb in a dissolved state and considered as potential pollutants are heavy metals, dyes, phenols, detergents, pesticides, polychlorinated biphenyls (PCBs), and others organic substances, such as organic matter. Unlike organic contaminants, heavy metals are not biodegradable and tend to accumulate in living organisms and many heavy metal ions are known to be toxic or carcinogenic. Toxic heavy metals of particular concern zinc, copper, nickel, mercury, cadmium, lead and chromium. Electrokinetic remediation deserves particular attention in soil treatment due to its peculiar advantages, including the capability of treating fine and low permeability materials, and achieving consolidation, dewatering and removal of salts and inorganic contaminants like heavy metals in a single stage. In this study, the remediation of artificially chromium contaminated soil by electrokinetic process, coupled with Eggshell Inorganic Fraction Powder (EGGIF) permeable reactive barrier (PRB), was investigated. An electric field of 2 V cm−1 was applied and was used an EGGIF/soil ratio of 30 g kg−1 of contaminated soil for the preparation of the permeable reactive barrier (PRB) in each test. Results proved that the study of chromium mobility revealed the predominance in its transportation through the soil towards the anode, due essentially to the existence of chromium in the form of oxyanions (chromate and dichromate), which confers a negative charge to the molecule. Chromium removal by electrokinetic remediation was faster in low levels of concentration and the utilization of citric acid as buffer and complexing agent allowed to maintain pH of soil below the precipitation limit for this element. It was obtained high removal rates of chromium in both experiments, especially near the anode. In the normalized distance to cathode of 0.8 it was achieved a maximum removal rate of chromium of 55, 59 and 60% in initial chromium concentration of 500 mg kg−1, 250 mg kg−1 and 100 mg kg−1, respectively. The viability of the new coupling technology developed (electrokinetic with EGGIF permeable reactive barrier) to treat low-permeability polluted soils was demonstrated. Based on the proved efficiency, this remediation technique has to be optimized and applied to real soils in order to validate it as a large-scale solution.

scholarly journals An investigation of qualitative variations of groundwater resources under municipal wastewater recharge using numerical and laboratory models, Nazarabad plain, Iran

2021 ◽  
Author(s):  
Nezhla Amiri ◽  
Mohammad Nakhaei
Keyword(s):  
Heavy Metals ◽  
Municipal Wastewater ◽  
Groundwater Resources ◽  
Column Experiment ◽  
Actual Condition ◽  
Alkaline Soil ◽  
Urban Wastewater ◽  
Long Run ◽  
Wastewater Recharge ◽  
Laboratory Models

AbstractMunicipal wastewater irrigation induces elevated concentrations of heavy metals in the soil which their further leaching leads to groundwater contamination in the long run. In this study, both column experiment and 5-year prediction modeling using HYDRUS-1D were conducted to investigate the probable adsorption and transport of 10 different metals including As, Ba, Cr, Cu, Mo, Ni, Pb, Rb, Sr, and Zn in an alkaline soil from Nazarabad plain in Iran which has been irrigated with treated urban wastewater for several years. The obtained results revealed that reaching the equilibrium rate for the mentioned elements during 1825 days (= 5 years) was as follows: Mo > Cr > Rb > Zn > Ni > Ba> Sr > Pb > As> Cu. The finding implies that molybdenum (Mo) and copper (Cu) are the most mobile and the most adsorbent heavy metals in the soil, respectively. Higher mobility poses the greater potential risk of leaching into groundwater resources. Overall, experimental and numerical modelings had good accordance and were capable of describing the actual condition.

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